Here are some images of me starting with dried Kelp Meal and a Jar with 1/2 cup measuring device. to 1 gallon of water, shake until it's completely dispersed and this is a safe concentration for spraying the leaves and you would probably want to double that amount to apply to the soil. When you need to apply a kelp meal tea than add about 2 tsp. You'll want to do this in small batches and store in the refrigerator in the coldest place which is usually in a corner. Take the hydrated kelp meal and puree it as much as possible to make a kelp meal paste.
Once that is done then pour off any excess water and use that for a kelp meal tea. Take 1/4 cup of kelp meal and cover that with about 1/2 cup of water and let it completely re-hydrate. There are MANY "liquid" seaweed nutrient bottles and they aren't nearly as good as this easy DIY solution.
Plus Alginic acid, Mannitol, Cytokinins, Indoles, Hormones, Auxins and Gibberellins. Kelp contains: NPK along with over 60 micronutrients. I could go on and on about how kelp meal is a must have for your garden but I think you already know that. Not only is this quick and easy to prepare ahead of time, it's practically instant once you've pre-made the Hydrated Kelp meal. If you could only use 1 of our DIY plant tea's.